baber/WOPTO huggingface dataset:
Patent GB-769340-A (GB)
Title: Improvements in house automatic telephone exchange systems
Inventor: JOHNSON BENJAMIN BERTIE
IPC: H04Q3/00
Filed: 1954-09-20
Abstract: 769,340. Automatic exchange systems. TELEPHONE MANUFACTURING CO., Ltd. Sept. 20, 1955 [Sept. 20, 1954], No. 27189/54. Class 40 (4). Master stations are provided individually with finger-magnet bridges of the type described in Specification 703,931, whereby they can make connection to sub-stations in a P.A.X. system without going through the exchange. The master station has a loud-speaker LS and microphone as well as a conventional receiver TL. It can be connected to the P.A.X. in known manner by operation of a key with contacts KDA<SP>1</SP>, KDA<SP>11</SP>. To gain direct access to a wanted line the master operates a tens and a units keys KD, KU, which automatically close contacts KALL, Fig. 3. Relay E pulls up to energize A, Fig. 2, and S, Fig. 4. A energizes B, C, and D in succession, whereupon D locks up and releases A, B and C slowly and successively. Relay S meanwhile disconnects the master line from the P.A.X. equipment and connects it to a relay selector SEL. While A and C are both operated circuit is made from the operated tens key KD to selector SEL through the secondary of transformer TR1, direct or through one or other rectifier MR1, MR2 with or without a resistor R2, R3. The resulting current energizes one or more of relays X, Y, Z through a network of rectifiers MR3- MR6, according to the tens key K10-K50 depressed. In the period between the release of B and the release of C the units key K1-K4 is likewise effective to energize X or Y, with or without Z. The first operation of the relay selector sets up the tens digit by energizing one or more of relays TX, TY, TZ, which energize a finger magnet in each of the groups uxf, uyf. Digit change relay DC pulls up at the restoration of the relay selector, which is then set by the units digit to energize a units magnet UX or UY with or without relay UZ. The magnet UX or UY closes one or other of the two banks of contacts selected by the finger magnets and relay UZ according to whether it is operated or not selects the upper or the lower line served by the operated contact. UX or UY also releases DC and the relay selector and extends the master line towards the bridge. If the wanted line is free, H pulls up and marks the line busy. H also applies ringing current through relay F and ringing tone through condenser CON3. When the called party answers, F pulls up to cut off ringing current and tone and energizes DD. DD switches through and acts as feed relay to the called line. If the wanted line is busy, H cannot operate, but G pulls up slowly to connect busy tone BT to the calling line. The master may abandon the call by restoring the tens and units keys. Alternatively, he may park on the engaged connection until it is released, or he may break in by operating key KP. In this case DD operates to supply busy tone to the parties engaged in the conversation. When they clear down the desired connection is established.
Patent GB-408156-A (GB)
Title: Improvements in or relating to hair waving devices
IPC: A45D4/08
Filed: 1933-10-03
Abstract: 408,156. Hair - waving appliances. STROHER AKT.-GES., F., Rothenkirchen, Vogtland, Germany. Oct. 3, 1933, No. 27198. Convention date, Jan. 19. [Class 131.] A hair-waving appliance comprises a clip consisting of a pair of pivoted jaws b<1> urged together by a spring d and adapted to be clamped around a coil of hair wound on a rodshaped electric heater, the clip being provided, between the jaws b<1> and the pivot e, with a spring clip f within which a second rod-shaped electric heater may be inserted. The clip is opened by gripping- members a of insulating material, and the jaws b<1> may be covered with heat insulating material. The appliance may be provided with more than one spring clip f.
Patent GB-1107608-A (GB)
Title: A method of producing tetracycline
IPC: A61K31/65
Filed: 1965-06-28
Abstract: Tetracycline is produced by a method comprising aerobically, and under conditions of submerged growth, culturing the strain Streptomyces N.C.I.B. 9692 in a chloride-ion-containing aqueous culture medium to accumulate and recover a substantial amount of tetracycline. The strain Streptomyces N.C.I.B. 9692 was obtained by mutagenic treatment of an antagonistic actinomyces strain with U.V. light and subsequent cultivation of the irradiated spores on a sporulation medium containing chlorotetracycline. The aqueous culture medium preferably contains 3 to 300 micromoles of chloride ions per millilitre of medium.  Since the aqueous culture medium contains chloride ions, the nitrogen source may be provided by amino acids in the form of protein hydrolysates made from feathers, bones, or vegetable protein by hydrolysis with hydrochloric acid and subsequent neutralization and waste products from soup condiments or glutamic acid formed by acid hydrolysis of suitable proteins (humine substances).
Patent GB-501463-A (GB)
Title: Improvements in or relating to aircraft wing flaps
IPC: B64C9/32
Filed: 1937-10-07
Abstract: 501,463. Controlling aircraft. FAIREY AVIATION CO., Ltd., and LOBELLE, M. J. O. Oct. 7, 1937, No. 27242.. [Class 4]. Upper and lower pivoted flaps disposed at the trailing marginal portion of an aircraft wing are operable together or the lower flaps are operable alone, the flaps being interconnected through a clutch device, the interengaging members of which are carried by two sleeves, one of which 16 is slidably splihed on the shaft 15 to which the lower flap is fixed and the other is carried by a sleeve 19 rotatable on the shaft and connected to the upper flap by lever-and-link mechanism. The clutch is actuated by the pilot through lever-and-link mechanism so that all the clutches which may be provided are engaged and disengaged simultaneously. In one form, the flap 14 carries an arm 31 to which is pivoted the piston-rod 32 of an hydraulic-jack 33 disposed in the wing 13. The sleeve 19 carries an arm 27 pivoted to a block 28 slidable in a groove 29 in an arm 30 mounted on the shaft 12 carrying the upper flap 11. In a modification, the upper flap may extend forwardly of the shaft 12 and may be operated through a lever linked to the arm 27.
Patent GB-616511-A (GB)
Title: Self-adhesive labels and tapes, made of non-textile materials
IPC: G09F3/10
Filed: 1946-09-11
Abstract: 616,511. Compound sheet materials. BRITTON, W. J. Sept. 11, 1946, No. 27264. [Class 140] [Also in Group XV] The adhesive coating on a self-adhesive, non-textile label or adhesive tape A is temporarily protected by a non-textile covering laid on in two separate strips B and C, strip B being folded back at its inner edge and overlapped by strip C so that two free edges are provided to facilitate removal of the covering. The label or tape and the strips may be of coated paper, parchment paper, or regenerated cellulose foil.
Patent GB-1326330-A (GB)
Title: Agents for the selective combating of weeds in beets
IPC: A01P13/00
Filed: 1972-06-12
Abstract: 1326330 Herbicidal composition BAYER AG 12 June 1972. [12 June 1971] 27265/72 Heading ASE  A selective herbicidal composition for use in beet cultivation contains as active ingredients (a) imidazolidin-2-one-1-carboxylic acid isobutylamide of formula and (b) 1-methyl-3-(2-benzothiazolyl)-urea of formula  or 3 - cyclohexyl - 5, 6 - trimethylene-uracil of formula  alone or in admixture with a solid or liquid or liquefied gaseous diluent or carrier.
Patent GB-1440243-A (GB)
Title: Soil sealing method
IPC: E02D19/16
Filed: 1973-06-07
Abstract: 1440243 Soil stabilisation DOW CHEMICAL CO 7 June 1973 [7 June 1972] 27272/73 Heading E1F A method of reducing the permeability of soil solids to water comprises; a) admixing with a layer of said soil solids a mixture of an expanding lattice clay and a substantially linear water-soluble anionic or nonionic organic polymer said polymer having a molecular weight of at least 150,000 and containing a substantially continuous linear carbon backbone, said mixture comprising from 0.25-20 percent of said layer of said soil solids, and b) compacting said layer of soil containing said mixture to at least 80 percent of its maximum density.
Patent GB-661456-A (GB)
Title: Improvements in or relating to the manufacture of can bodies
IPC: B21D51/26
Filed: 1949-10-24
Abstract: 661,456. Tube expanders. METAL BOX CO., Ltd., and LYTOLLIS, J. July 5, 1950 [Oct. 24, 1949], No. 27298/49. Class 83 (iv). An apparatus for reforming rectangular can bodies flattened for transport comprises four mandrels disposed in pairs. Two mandrels 3 are fixed in a support 1 and have hinged thereto by members 8 two mandrels 6 connected by jointed levers 9, 10, the hinge-pin 11 of which engages a cam groove 19 in a load actuating member 17 pivoted to a fixed mandrel. The mandrels are disposed in one plane by manipulation of the member 17 and inserted in the can body. By swinging the member 17 the mandrels 6 are moved to restore the can body to rectangular shape. The levers 9, 10 are jointed to permit limited movement about the pin 11 and on reverse movement of the member 17 assume a V-formation to move the mandrels 6 towards each other to facilitate stripping. The apparatus may be powerdriven with the mandrels on a turret and the member 17 replaced by a cam.
Patent GB-977996-A (GB)
Title: Improvements in and relating to a method and an apparatus for feeding tempered chocolate mass to a chocolate enrober
IPC: A23G1/18
Filed: 1961-07-27
Abstract: 977,996. Chocolate enrobers. A. E. J. NIELSEN, [trading as A. E. NEILSENS MASKINFABRIK]. July 27, 1961 [Aug. 2, 1960], No. 27312/61. Heading B5A. [Also in Division A2] In a method of feeding tempered chocolate to a chocolate enrober, the chocolate is capable of circulation in two systems, one system including a pump 9 for feeding chocolate from a collecting tank 8 to an enrobing head 20, the excess chocolate from the enrobing head returning to the tank 8, and the other system comprising a pump (not shown) a heating and storage container 3 and a cooler 4. The two systems are connected by a pipe 6 containing a valve 7 which is regulated so that the quality of chocolate supplied is almost equal to the quantity used in the enrober. Excess chocolate in the tank 8 is returned to a main storage container 1 by a pump 11. In a modification (Fig. 2, not shown) the pump 11 delivers the excess chocolate direct to pipe 2. In Fig. 3 (not shown) an arrangement is shown for automatically controlling the valve 7 (marked 18 in Fig. 3) by a weighing device connected to an overflow from tank 8.
Patent GB-741527-A (GB)
Title: Improvements in or relating to gramophone pick-up arm rests
IPC: G11B3/00
Filed: 1953-10-06
Abstract: 741,527. Gramophones. CAMPION, L. G. May 14, 1954  ' [Oct. 6, 1953], No. 27342/53. Class 40(2) A gramophone pick-up arm rest comprises an arm supporting cradle which can be swung about an axis parallel with the turntable axis, into predetermined arm receiving stations selectively to locate lateral abutments on the cradle into position for guiding the arm down to a record disc not shown carried by the turntable, the abutments being disposed at various radial distances from the cradle axis to correspond respectively with records of various diameters. The cradle comprises between two and four, as shown three, coplanar bars 1-3, of various lengths and terminated by guide fingers 6 which constitute the abutments, the fingers being adjustably secured by screwed stems 5 and lock-nuts 7 to, or being integral with, the bars 1-3, and being straight but inclined to the vertical as shown, or vertical or arcuate or curved. The cradle is pivotally supported on the turntable motor board not shown by its support column 4 which is adjustably screwed into an axially tapped tube 8 supported by a sleeve 14 screwed to the boss 15 of a securing plate 16 having elongated slots 18 for securing screws. The various stations are located by a transverse pin 10 in the tube 8 and which is loaded into engagement with diametrically opposed slots 17 in the boss 15 by a helical compression spring 11 confined by a collar 13 screwed into the top of sleeve 14. Fig. 3 not shown discloses an arrangement wherein the spring-loaded locating parts would be disposed beneath the motor board, and the construction may be such as to permit such parts to be either above or beneath the motor board.
Patent GB-272379-A (GB)
Title: Improvements in or relating to advertising devices
IPC: G09F1/04
Filed: 1926-11-01
Abstract: 272,379. Sweetland, B. J. Nov. 1, 1926. Advertising on letter sheets. - A letter sheet 10 is provided with slits 11, 12, 13 whereby an advertising booklet or other small flat article 20<A> mav be inserted and held against displacement in three directions. Folding of the sheet on the line 18 prevents displacement in a fourth direction. The retaining bands 14, 15<A> formed by the slits, and the adjacent parts of the sheet 10, may be ornamented to harmonize with the article 20<A>.
Patent GB-1397737-A (GB)
Title: Road surfacing
IPC: E01C7/08
Filed: 1972-06-02
Abstract: 1397737 Road surfaces J A LANGTRYLANGTON 1 Nov 1972 [28 Sept 1971 2 June 1972] 45058/71 and 27383/72 Heading EIG A light-reflective concrete road surfacing extending over part or the whole of a road area and forming part of its structure has a thickness which is at least half an inch and has ballotini or like glass spheres and/or spheroids incorporated substantially uniformly therethrough. The thickness is preferably between ¥" and 2¢". The ballotini may be incorporated in a concrete screed laid over a concrete base which is preferably unset. The ballotini may be coated with water-repellant (e.g. silicone) or paint, or may be embedded in a pigmented material. A specific mix incorporates anti-skid calcined flint aggregates, ballotini, binding agent and titanium dioxide. The road surface may be abraded to expose the ballotini. Anti-skid grooves may be provided. The road surface may be white or coloured; road line markings may be black; pedestrian crossing markings may be blue.
Patent GB-191194-A (GB)
Title: Improvements in and relating to means for measuring and indicating the measure of fluctuating fluid pressures
IPC: G01L23/18
Filed: 1921-10-17
Abstract: 191,194. Emtage, E. L. M. Oct. 17, 1921. Electrostatic relays; pneumatic-actuation. - An electric device for indicating fluctuations of pressure in the cylinders of internal-combustion engines &c. comprises a conductive disc 1 of copper &c. and a cylinder 2 of semi-conducting material, such as marble, agate, lithographic stone or the like, the two bodies being in hard electric contact at the surface 3. The device is assembled as shown with mica bushes 7, 8. The disc 1 is connected to terminal 9 and cylinder 2 to terminal 10 through a mercury body 13, and a steady potential is applied across the contact surface 3. The, device may fit into the aperture usually occupied by the sparking plug. The fluctuations of pressure in the engine cylinder are superimposed on the contact pressure of the surface 3 and the electrostatic attraction, thus causing the current to vary as the superimposed pressure varies, this variation of current being used through an oscillograph &c. to indicate the conditions of pressure in the cylinder.
Patent GB-1159184-A (GB)
Title: Coated Support and Process for its Manufacture
IPC: C08F8/50
Filed: 1967-06-14
Abstract: 1,159,184. Coated metal supports. CRYLOR. 14 June, 1967 [17 June, 1966], No.27511/67. Heading B2K. An element, which can be used for heat transfer by radiation, comprises a metal support having a coating formed by the pyrolysis of an acrylonitrile homopolymer, copolymer, graft copolymer or mixtures of polymers containing at least 85 % by wt. of acrylonitrile and up to 15% of one or more ethylenic non-halogenated compounds copolymerisable with acrylonitrile, which contains a metal salt. The metal salt may be a salt of a divalent metal which is capable of forming coordination complexes e.g. a salt of copper, nickel, cobalt or cadmium. The coating may have a total emission factor of at least 0.90. The element may be made by depositing on the surface of the metal support e.g. by brushing or spraying, a layer of a solution of the polymer and of the salt in a common solvent, examples of which are given, eliminating the solvent, and pyrolysing the resulting film e.g. by heating the coated support at a temperature between 150 and 400‹C for more than 10 hours. The film-forming and pyrolysis operations may be repeated one or more times. The support may be of pure metal or a metal alloy e.g. steel, copper or its alloys, and may be of plane or cylindrical form of which the interval surface may be coated to produce a heating roller as described in French Specification No. 1,443,153. The surface of the support may be polished or roughened.
Patent GB-646342-A (GB)
Title: Improvements in or relating to switches for electrical circuits
IPC: H01H13/06
Filed: 1948-10-25
Abstract: 646,342. Press-button retractive switches; mechanical switches, without quick-action. THORNYCROFT & CO., Ltd., J. I., and CLARKE, F. M. Oct. 25, 1948, No. 27683. [Class 38(v)]. A plunger - operated switch is made water-tight by a flexible sealing member 7 comprising a tubular part 7a which closely embraces the plunger 4 and an enlarged part 7c ending in a thickened rim 7d clamped to the cover 6 of the switch by a ring 8. The plunger 4 has an extension 4f carrying a conical insulating member 4d normally lying between spring contacts 2b and a conducting member 4b which is adapted to bridge contacts 2b when the plunger is pushed in, in which position the sealing member 7 is partially telescoped. The switch may be held " on " by shaping the contact 4b concavely, as shown, or may be made retractive by making the contact 4b of conical shape. Fig. 4 (not shown). The terminals 3c are separated by an extension 1e of the casing.
Patent GB-1203334-A (GB)
Title: Aromatic polyamides
Inventor: WOLF GERHARD DIETER
IPC: C08G69/32
Filed: 1968-06-11
Abstract: 1,203,334. Quinazoline - 2,4 - diones. FARBENFABRIKEN BAYER A.G. 11 June. 1968 [13 July, 1967; 28 Nov., 1967; 31 Jan., 1968], No. 27735/68. Heading C2C. [Also in Division C3] Diamines of the formula when R is H or C 1-4  alkyl, X is a mono- or polynuclear aromatic radical which may contain -CH 2 -, -O-, -S-, or -SO 2 - links and alkyl or halo substituents, and Y is -NH- or or the corresponding non-ring-closed diaminourea compounds are used to prepare polyamides (see Division C3). They may be prepared by reacting nitroanthranilic acid esters with nitroaromatic isocyanates in a 1 : 1 ratio or 4- or 5- nitroanthranilic acid with aromatic diisocyanates in a 2 : 1 ratio followed by cyclization and reduction of the NO 2  groups to NH 2 . In examples preparative details are given for the following diamines Reference is made to Specification 1,104,411.
Patent GB-892087-A (GB)
Title: Process for the production of water or hydrogen enriched in deuterium
IPC: C01B4/00
Filed: 1959-08-13
Abstract: <PICT:0892087/III/1> In a process in which hydrogen passing to an ammonia synthesis is depleted in deuterium by countercurrent isotopic exchange with ammonia produced, the ammonia is enriched by isotopic exchange with H2O before contact with the H2, and the ammonia after both enrichments is either burnt to nitric oxide and enriched water, or cracked to enriched hydrogen and nitrogen. H2O 1 is converted to H2 in A, e.g. by electrolysis, and the H2 passes through isotopic exchanger B, countercurrent to NH3, to NH3 synthesis C.  The NH3 vapour formed is passed, in part, through isotopic exchanger D countercurrent to natural water to produce NH3 (with the natural deuterium content) which is liquefied by compressor or cooler E.  The liquid NH3, after addition if desired of catalyst, e.g. platinum or alkali metal amide, through 17, is passed in countercurrent to the H2 through exchanger B, and through filter F to remove catalyst, to combustion or cracking plant G where NH3 is burnt to nitric oxide and H2O, or cracked to N2 and H2.  Resulting H2O or H2 is passed through pipe 11 to generator A or to line 2 respectively.  Part of the H2O or H2 may be by-passed through deuterium concentration plant H, whence a D-enriched H2O or H2 is recovered, and the D-poor fraction is returned through 13.  D may also be recovered by diverting part of the H2 feed at 15 to a concentration plant and returning the D-poor fraction at 16.  It is stated that where combustion of NH3 is used, HNO3 formed is neutralized with metal oxide, e.g. quick lime, and an anhydrous salt recovered to avoid D losses.
Patent GB-703078-A (GB)
Title: Improvements in or relating to hydraulic ram or jack devices
Inventor: SHERWEN THEO
IPC: F15B15/14
Filed: 1950-11-14
Abstract: 703,078. Stuffing box substitutes. FERGUSON, Ltd., H. Nov. 29, 1951 [Nov. 14, 1950], No. 27779/50. Class 122 (5). [Also in Group XXIX] A seeing assembly 6 between the ram 5 and cylinder assembly is retained in a 1 of a hydraulic jack (see Group XXIX) comprises sintered bronze bearing rings 16 with an interposed rubber packing 18 having a steel ring 17 bonded thereto. The a counterbore 13 by a split ring 14. The ram engages -a sleeve 19 at the end of the stroke and serves to -increase the tightness of the seal; the sleeve 19 bearing on the inner ring 16.
Patent GB-792531-A (GB)
Title: Improvements in and relating to absorbent pads
IPC: A61F13/15
Filed: 1956-09-12
Abstract: 792,531. Catamenial appliances. KIMBERLY - CLARK CORPORATION. Sept. 12, 1956 [Oct. 5,1955], No. 27896/56. Class 81(2). In a sanitary napkin 10, comprising fluid repellent side strips 12 which partially overlie at least one surface of the pad 16, the said surface is provided with a fluid-repellent coating 22 which thus comes between the surface of the pad and the overlying edge portion of the strip 12. The coating is preferably a thermoplastic substance such as wax, latex emulsion, rosin or silicone and may be applied by spraying or printing directly on to the pad or alternatively the coating is initially placed on the inner surface of the side strips and transferred to the pad by heating. In either case it is preferred that the final coating should extend beyond the corresponding edges of the strip in order to prevent fluid passing to the outer face of the strips. If desired, the coating may extend down the side edges of the pad and possibly to the outer surface.
Patent GB-1217688-A (GB)
Title: Electrical circuits for converting voltage to frequency
Inventor: STRANGE NORMAN EDWARD
IPC: H03M1/00
Filed: 1967-06-16
Abstract: 1,217,688. Pulse modulation circuits; transistor pulse oscillators. WEIR ELECTRONICS Ltd. 13 March, 1968 [16 June, 1967], No. 27898/67. Headings H3T and H4L. [Also in Division G4] In a voltage-to-frequency converter a constant current i which is dependent upon the input voltage V charges a capacitor C through a resistance R, the value of resistance R being chosen to reduce non-linearity at the higher input voltages. As the the capacitor is changed the emitter potential of transistor TR1 rises linearly with time until a reference voltage E is reached and transistors TR1, TR2 conduct. This causes transistor TR3 to conduct and discharge capacitor C and the cycle is repeated. The output pulses may be gated and counted over predetermined time intervals, Fig. 3. C1 is a converter with a variable input voltage V1 as described above whose output is gated at G by pulses from a circuit C2, similar to C1 but controlled by a predetermined input V2, the circuits C1, C2 being connected to the same reference potential E so that any variations affect both circuits in the same way to minimize errors.